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Lesson 14— Teacher Training Introduction to "Vanadium— A Transition Element"




Using chromium as an example, Professor Campbell shows that the transition metals are characterized by valence electrons in closely spaced energy levels. He then comments upon the difference in color between aqueous chromium nitrate solution and aqueous chromium chloride solution. The color difference and the incomplete precipitation of chloride from the latter solution is related to the formation of complex ions.


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